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      <title>Spring Boot的核心特性有哪些？ - 交互式测验</title>
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          padding: 20px 30px;
          display: flex;
          justify-content: space-between; /* 将按钮分布在两侧 */
          align-items: center;
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        .nav-btn {
          background-color: #4a90e2;
          color: white;
          border: none;
          border-radius: 8px;
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          box-shadow: 0 4px 12px rgba(0,0,0,0.15);
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      </style>
    </head>
    <body>
      <div class="main-wrapper">
          <div class="quiz-container">
            <div class="quiz-header">
              <h1>Spring Boot的核心特性有哪些？ - 交互式测验</h1>
              <p>检验你对文档内容的理解程度</p>
            </div>
            <div id="quiz-content">
                <div class="quiz-body">
                    <div class="progress-bar">
                        <div id="progress-indicator"></div>
                    </div>
                    <div id="question-container">
                      <p id="question-text"></p>
                      <ul class="options-list" id="options-list"></ul>
                    </div>
                    <div id="result-container"></div>
                    <div id="hint-container" class="hint-container"></div>
                </div>
                <div class="quiz-footer" id="quiz-footer">
                  <button id="prev-btn" class="nav-btn">上一题</button>
                  <button id="hint-btn" class="nav-btn" style="background-color: #ffc107; color: #333; box-shadow: 0 4px 12px rgba(255,193,7,0.3);">提示</button>
                  <button id="next-btn" class="nav-btn">下一题</button>
                </div>
            </div>
          </div>
      </div>

      <script>
        const quizData = [
  {
    "question": "Spring Boot的“自动配置”特性主要解决了什么问题？",
    "options": [
      "它会自动编写项目的业务逻辑代码，从而提高开发速度。",
      "它根据项目的类路径和依赖，自动配置Spring应用程序所需的组件，从而减少了开发者的手动配置工作。",
      "它强制所有项目使用统一的外部Web服务器，如Tomcat，以保证环境一致性。",
      "它能为项目自动生成API文档和用户手册。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "自动配置是Spring Boot的核心特性之一。它能够智能地检查项目中存在的库（即类路径上的依赖），并基于这些依赖为Spring应用程序提供合理的默认配置。例如，当检测到数据库驱动和Spring Data JPA时，它会自动配置数据源和EntityManagerFactory，极大地减少了开发者需要手动编写的样板配置代码。",
    "source": "文档中「1. 自动配置」部分",
    "hint": "思考一下这个特性如何帮助开发者“减少工作量”。"
  },
  {
    "question": "在Spring Boot中，“起步依赖”（Starters）的主要作用是什么？",
    "options": [
      "它们是用于监控生产环境应用程序性能的工具集。",
      "它们是预定义的依赖集合，可以快速引入特定功能（如Web开发）所需的一系列库和配置。",
      "它们是用于启动嵌入式Web服务器的独立可执行脚本。",
      "它们是Spring官方提供的项目代码模板，用于快速生成业务模块。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "“起步依赖”（Starters）是Spring Boot提供的一组方便的依赖描述符。开发者只需在项目中引入一个starter，比如 `spring-boot-starter-web`，构建工具（如Maven或Gradle）就会自动解析并引入构建Web应用所需的所有相关依赖，如Spring MVC, Jackson, Tomcat等，这有效避免了开发者手动管理众多依赖及其版本冲突的麻烦。",
    "source": "文档中「2. 起步依赖（Starters）」部分",
    "hint": "文档中以 `spring-boot-starter-web` 为例说明了它的用途。"
  },
  {
    "question": "Spring Boot支持嵌入式Web服务器（如Tomcat）带来了什么核心优势？",
    "options": [
      "它显著提升了应用程序在生产环境中的运行性能，远超外部服务器。",
      "它只支持静态网页的托管，简化了前端应用的部署。",
      "使得应用程序可以作为独立的可执行JAR文件运行，无需部署到外部的应用服务器，简化了部署过程。",
      "它强制所有开发者使用统一版本的服务器，避免了环境不一致的问题。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "通过内嵌Web服务器，Spring Boot应用可以被打包成一个包含所有依赖（包括服务器本身）的“胖JAR”（fat JAR）或“可执行JAR”。这意味着您只需要一个 `java -jar` 命令就可以在任何有Java环境的机器上启动整个应用，极大地简化了开发、测试和部署流程，非常适合微服务和云原生架构。",
    "source": "文档中「3. 嵌入式 Web 服务器」部分",
    "hint": "这个特性让应用程序能够“独立运行”，想想这对部署意味着什么。"
  },
  {
    "question": "根据文档，Spring Boot的哪个生产就绪功能提供了应用程序的健康检查、指标监控和状态查看等功能？",
    "options": [
      "Starters",
      "Spring Boot CLI",
      "Actuator",
      "Spring Initializr"
    ],
    "correctAnswerIndex": 2,
    "explanation": "Spring Boot Actuator是专门为生产环境设计的模块，它通过一系列HTTP端点（如 `/actuator/health`, `/actuator/metrics`, `/actuator/info`）暴露了应用程序的内部运行状态。这使得运维团队可以轻松地监控应用的健康状况、收集性能指标并进行管理，是构建可靠微服务的重要组成部分。",
    "source": "文档中「5. 生产就绪功能」部分",
    "hint": "文档中明确列出了一个提供“监控和管理功能”的组件。"
  },
  {
    "question": "关于Spring Boot的配置文件管理，以下哪项描述是正确的？",
    "options": [
      "所有配置都必须写在XML文件中，这是Spring的传统方式。",
      "支持使用 `application.properties` 或 `application.yml` 文件进行配置，并且可以通过不同的配置文件实现环境特定的配置。",
      "应用程序的配置在编译后就固化在JAR包中，无法在运行时修改。",
      "只支持通过Java代码（@Configuration类）进行配置，不支持外部文件。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "Spring Boot提供了非常灵活和强大的外部化配置机制。开发者可以使用`.properties`或`.yml`格式的文件来定义配置项。更重要的是，通过命名约定（如 `application-dev.properties`, `application-prod.yml`）并激活相应的profile，可以轻松地为不同环境（开发、测试、生产）加载不同的配置，而无需修改代码。",
    "source": "文档中「7. 配置文件管理」和「4. 开箱即用的配置」部分",
    "hint": "文档提到了两种文件格式，并支持为开发、测试和生产等不同场景进行配置。"
  },
  {
    "question": "Spring Boot能够实现快速开发，其背后遵循的一个重要原则是什么？",
    "options": [
      "面向切面编程（Aspect-Oriented Programming）",
      "测试驱动开发（Test-Driven Development）",
      "依赖注入（Dependency Injection）",
      "约定优于配置（Convention over Configuration）"
    ],
    "correctAnswerIndex": 3,
    "explanation": "“约定优于配置”是Spring Boot设计的核心理念。它意味着框架为大多数场景提供了一套合理的默认配置（即“约定”）。开发者只有在需要偏离这些默认设置时才需要进行手动配置。这大大减少了样板代码和繁琐的配置工作，让开发者能更专注于业务逻辑的实现。",
    "source": "文档中「6. 快速开发」部分",
    "hint": "文档中提到一个原则，它“减少了开发时的配置需求”。"
  },
  {
    "question": "文档中提到的哪个工具可以帮助开发者快速生成Spring Boot项目的骨架和基础配置？",
    "options": [
      "Spring Boot Actuator",
      "Spring Initializr",
      "Spring Boot CLI"
    ],
    "correctAnswerIndex": 1,
    "explanation": "Spring Initializr 是一个Web应用（也集成在主流IDE中），它提供了一个友好的界面，让开发者可以选择项目元数据、Spring Boot版本、语言以及所需的起步依赖（Starters）。然后，它会生成一个完整的、可直接导入并运行的项目结构压缩包，极大地简化了项目初始化的过程。",
    "source": "文档中「10. 代码生成」部分",
    "hint": "这是一个帮助你“初始化”项目的工具，让你从零开始一个新项目变得非常简单。"
  }
];
        console.log("Quiz Data:", JSON.parse(JSON.stringify(quizData))); // 添加这行用于调试，以可展开的JSON格式输出
        
        let currentQuestionIndex = 0;
        let score = 0;
        // 存储每个问题的回答状态
        const userAnswers = new Array(quizData.length).fill(null); 

        const questionTextEl = document.getElementById('question-text');
        const optionsListEl = document.getElementById('options-list');
        const resultContainerEl = document.getElementById('result-container');
        const quizContentEl = document.getElementById('quiz-content');
        const progressIndicatorEl = document.getElementById('progress-indicator');
        const prevBtn = document.getElementById('prev-btn');
        const nextBtn = document.getElementById('next-btn');
        const hintBtn = document.getElementById('hint-btn');
        const hintContainerEl = document.getElementById('hint-container');

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          resultContainerEl.innerHTML = '';
          optionsListEl.innerHTML = '';
          hintContainerEl.style.display = 'none'; // 隐藏提示
          
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            return;
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            li.textContent = optionText;
            li.dataset.index = index; // Store index in a data attribute
            // 如果这道题已经回答过，恢复状态
            if (userAnswers[currentQuestionIndex] !== null) {
                if (index === userAnswers[currentQuestionIndex]) {
                    li.classList.add('selected');
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            optionsListEl.appendChild(li);
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          // 如果已经回答过，直接显示结果
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          updateNavigationButtons();
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        function selectOption(optionIndex) {
            userAnswers[currentQuestionIndex] = optionIndex;
            const currentQuestion = quizData[currentQuestionIndex];
            const isCorrect = optionIndex === currentQuestion.correctAnswerIndex;

            // 重新计算分数
            score = userAnswers.reduce((acc, answer, index) => {
                return answer === quizData[index].correctAnswerIndex ? acc + 1 : acc;
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            showResult(isCorrect, currentQuestion);
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            nextBtn.style.display = 'block';
            hintBtn.style.display = 'block'; // 显示提示按钮

            prevBtn.disabled = currentQuestionIndex === 0;
            nextBtn.disabled = false; // 最后一题时，下一题按钮不禁用，而是用于显示报告
            nextBtn.textContent = (currentQuestionIndex === quizData.length - 1) ? '查看报告' : '下一题';
            
            // 如果当前问题没有提示，则禁用提示按钮并隐藏提示内容
            if (!quizData[currentQuestionIndex].hint) {
                hintBtn.disabled = true;
                hintContainerEl.style.display = 'none';
                hintContainerEl.textContent = ''; // 清除旧的提示内容
            } else {
                hintBtn.disabled = false;
            }
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        function showResult(isCorrect, questionData) {
            resultContainerEl.innerHTML = ''; // 清空之前的结果
            const resultBox = document.createElement('div');
            resultBox.className = `result-box ${isCorrect ? 'correct' : 'incorrect'}`;
            
            let html = `<h3>${isCorrect ? '回答正确！' : '回答错误'}</h3>`;
            if (!isCorrect) {
                html += `<p><strong>正确答案是：</strong> ${questionData.options[questionData.correctAnswerIndex]}</p>`;
            }
            html += `<div class="explanation-text">${questionData.explanation}</div>`;
            html += `<div class="source-text">来源: ${questionData.source}</div>`;
            
            resultBox.innerHTML = html;
            resultContainerEl.appendChild(resultBox);

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                child.style.pointerEvents = 'none';
                // 高亮正确答案
                if (index === questionData.correctAnswerIndex) {
                    child.classList.add('correct'); // 需要添加CSS样式
                    child.style.backgroundColor = '#d4edda';
                    child.style.borderColor = '#c3e6cb';
                }
                // 如果选错了，高亮错误选项
                if (!isCorrect && index === userAnswers[currentQuestionIndex]) {
                    child.classList.add('incorrect'); // 需要添加CSS样式
                    child.style.backgroundColor = '#f8d7da';
                    child.style.borderColor = '#f5c6cb';
                }
            });
        }

        function goToNextQuestion() {
            if (currentQuestionIndex < quizData.length - 1) {
                currentQuestionIndex++;
                loadQuestion();
            } else {
                showFinalScore();
            }
        }

        function goToPreviousQuestion() {
            if (currentQuestionIndex > 0) {
                currentQuestionIndex--;
                loadQuestion();
            }
        }
        
        function showHint() {
            const currentQuestion = quizData[currentQuestionIndex];
            if (currentQuestion.hint) {
                hintContainerEl.textContent = currentQuestion.hint;
                hintContainerEl.style.display = 'block';
            } else {
                hintContainerEl.style.display = 'none';
            }
        }

        function showFinalScore() {
            document.querySelector('.quiz-body').style.display = 'none';
            document.getElementById('quiz-footer').style.display = 'none';

            const correctCount = score;
            const totalQuestions = quizData.length;
            const answeredCount = userAnswers.filter(a => a !== null).length;
            const wrongCount = answeredCount - correctCount;
            const skippedCount = totalQuestions - answeredCount;
            const accuracy = totalQuestions > 0 ? Math.round((correctCount / totalQuestions) * 100) : 0;
            const errorRate = totalQuestions > 0 ? Math.round((wrongCount / totalQuestions) * 100) : 0;

            const finalScoreHtml =
                '<div class="final-score-container">' +
                '<h2>答题报告</h2>' +
                '<div class="score-summary">' +
                '<div class="score-card">' +
                '<h3>得分</h3>' +
                '<p>' + correctCount + ' / ' + totalQuestions + '</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>正确率</h3>' +
                '<p>' + accuracy + '%</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>错误率</h3>' +
                '<p>' + errorRate + '%</p>' +
                '</div>' +
                '<div class="score-card score-details">' +
                '<table>' +
                '<tr><td>正确</td><td>' + correctCount + '</td></tr>' +
                '<tr><td>错误</td><td>' + wrongCount + '</td></tr>' +
                '<tr><td>未答</td><td>' + skippedCount + '</td></tr>' +
                '</table>' +
                '</div>' +
                '</div>' +
                '<div class="report-actions">' +
                '<button id="review-btn">回顾测验</button>' +
                '<button class="primary" onclick="location.reload()">再试一次</button>' +
                '</div>' +
                '</div>';

            let reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }
            quizContentEl.insertAdjacentHTML('beforeend', finalScoreHtml);
            document.getElementById('review-btn').addEventListener('click', reviewQuiz);
        }

        function reviewQuiz() {
            const reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }

            document.querySelector('.quiz-body').style.display = 'block';
            document.getElementById('quiz-footer').style.display = 'flex';
            
            currentQuestionIndex = 0;
            loadQuestion();
            updateNavigationButtons(); // Ensure nav buttons are correctly displayed
        }

        // Event Delegation for options
        optionsListEl.addEventListener('click', (event) => {
            if (event.target && event.target.matches('li.option-item')) {
                // Check if the question has already been answered
                if (userAnswers[currentQuestionIndex] === null) {
                    const selectedIndex = parseInt(event.target.dataset.index, 10);
                    selectOption(selectedIndex);
                }
            }
        });

        prevBtn.addEventListener('click', goToPreviousQuestion);
        nextBtn.addEventListener('click', goToNextQuestion);
        hintBtn.addEventListener('click', showHint);
        
        // 初始加载
        loadQuestion();
      </script>
    </body>
    </html>
  